http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1042640-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_634538388f2dd27ea0a8bc2a2032c517 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-14 |
| filingDate | 1965-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1042640-A |
| titleOfInvention | Caprolactam derivatives and their preparation |
| abstract | The invention comprises compounds of the formula <FORM:1042640/C2/1> where R1 is carboxyl, alkoxycarbonyl, cyano acyl or carbamoyl and R2 is hydrogen or an electron attracting group. An electron attracting group is defined as one which when directly joined to a benzene nucleus causes nucleophilio substitution in the meta-position of the ring to the extent that at least 40% of the substituted product is the meta-isomer. The compounds are prepared by reacting an a -halogenated caprolactam, e.g. a -bromocaprolactam, with <FORM:1042640/C2/2> wherein M is an alkali metal, followed, if desired, by the conversion of R1 and/or R2 into other of the above mentioned groups or hydrogen. Examples describe the preparation of a -diethoxycarbonylmethyl-; a -dicarboxymethyl-; a -carboxymethyl-; a -ethoxycarbonylmethyl-; a -carbamoylmethyl-; and a -cyanoethoxycarbonylmethyl-caprolactam An intermediate is the dipotassium salt of a -dicarboxymethyl caprolactam.ALSO:Polymers are obtained from substituted caprolactams of the formula <FORM:1042640/C3/1> where R1 is carboxyl, alkoxycarbonyl, cyano, acyl or carbamoyl and R2 is hydrogen or an electron attracting group. An electron attracting group is defined as one which when joined to a benzene ring causes nucleophilic substitution in the m position so that at least 40% of the substitution product in the m isomer, copolymers may be obtained by polymerization with other compounds. Catalysts, viscosity stabilizers, anti-oxidants, pigments, fillers, foaming agents, plasticizers and other additives may be present. Examples describe the polymerization at 225 DEG to 280 DEG C. of a -carboxymethyl caprolactam, a -diethoxycarbonyl-methyl caprolactam and the copolymerization of a -carboxymethyl caprolactam with a -ethoxycarbonylmethyl caprolactam, with #x-caprolactam, with hexamethylene diammonium adipate, and with #x-caprolactam and #x-amino-caproic acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1626961-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4799408-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005004861-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1663201-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7723376-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007501855-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1626961-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007521311-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1663201-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7846963-B2 |
| priorityDate | 1964-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.